Build Custom Service Online Store from Scratch (JAVA)

I need you to program a custom online store application which engineers can use to buy electronic circuit board assembly services from us. Please take a minute to read the wikipedia article [login to view URL] on the industry in general before proceeding to read and bid. The order flow is principally demonstrated in the screenshots within the zip file. I need you to build the frontend and the backend application for order processing. We will also write the bill and do shipping from within the software. Specifically the major parts of the project are: 1) Quotation and Order Process (illustrated in screenshots), file uploads, Order Clarification Messaging System, Credit Card Billing, PDF Bill Print, Confirmation Email 2) My Account, Order Status of Current Projects, Past Orders Overview, Message System 3) Backend: Account Administration, Dashboard with sales per week / year, Overview over all bills, Open Orders, Packing label printing It is very important that you provide clean code and use modern programming practices (MVC). You will provide the code via subversion with precise change logging and excellent commenting within the code lines. I am aware that the project is not specified enough for a fixed price offer. This is why I would like you to look at what is required, ask me questions for clarification and then I would like to know three things from you: 1) What programming language will you use and what framework is best suited for a modern web application like this? (Java prefered) 2) How much do you think the basic functions would cost and how many hours would it take for you to build it? 3) Do you have similar online store projects that you have worked on or could you tell me more about why and how you are qualified to work on this with us? This is a first phase for us, I would like to identify 3 programmers for last discussion while we clarify the project more precisely and create a full project description with all mockups and requirements.